package org.bit.lesson04;

public class Demo406 {
    public static void main(String[] args) throws InterruptedException {
        Counter406 counter = new Counter406();

        Thread t1 = new Thread(() -> {
            for (int i = 0; i < 50000; i++) {
                counter.increase();
            }
        });

        Thread t2 = new Thread(() -> {
            for (int i = 0; i < 50000; i++) {
                counter.increase1();
            }
        });

        t1.start();
        t2.start();

        t1.join();
        t2.join();

        System.out.println("count = " + counter.count);
    }
}

class Counter406 {

    public static int count = 0;

    Object locker = new Object();

    public void increase() {
        synchronized (locker) {
            count++;
        }
    }

    public void increase1() {
        synchronized (locker) {
            count++;
        }
    }

}
